I think we need more. Suppose the know value was 0.51 (which occurs more
than once), would you want 2.1 or 2.2 returned?
best wishes
--
Bernard Liengme
Microsoft Excel MVP
http://people.stfx.ca/bliengme

"Doug" wrote in message
...
The other day, I used this formula to lookup table data based on the row
and
column such as:
=INDEX($R$3:$AA$41,MATCH(FLOOR($S$1,0.1),$Q$3:$Q$4 1,1),MATCH(FLOOR($S$1-FLOOR($S$1,0.1),0.01),$R$2:$AA$2,0))

So that If I had the number 2.22, it will return for me .15 from the table
lookup table (made up values)
.00 .01 .02 .03 .04 ... .09
2.0 .31 .32 .33 .34 .35 ... .50
2.1 .21 .35 .51 .51 .25 ... .85
2.2 .53 .52 .15 .52 .51 ... .81
2.3 .89 .58 .23 .45 .15 ... .15

My question now is, based on the above formula, how would I be able to do
the opposite. So if I have the indexed value; say .15, and I want it to
return 2.22?

--
Thank you!